In this case, the underlying suit was brought by non-federally recognized tribe to establish a land claim and perhaps federal recognition. The Stockbridge-Munsee Mohicans sought intervenor status to file a motion to dismiss on Rule 19 (indispensable party) grounds (again, my favorite rule). The district court denied the motion to dismiss, noting that the original plaintiffs had no standing anyway.

dct-opinion-on-motion-to-dismiss